Use the Cinq/Sei mounts.
Forged pistons, either as a small (4!) batch or as the ones out of a 1.4 turbo (if they'll fit) will sort out compression issues and be much stronger: it's not unheard of for the standard cast ones to suffer from holing or breakeage around the ring lands -- the Mahle cast ones for the 1108 were much better in that respect, but forged ones shouldn't cost a great deal more than the n/a 16v ones from FIAT if you source them from the right place. Technically, they're the best solution. Designed right and you'll have lower compression, squish, bigger ring lands and greater overall toughness: they may even turn out to be lighter.
Design wise, exhaust manifolds for turbos are very, very, different from n/a ones. They need to be much thicker, both for strength and for heat retention, and the 304 stainless commonly used for n/a manis is inadequate.
For the fuel pump, remember that it's not just about pressure but about capacity. You want reserve capacity: if you don't have it, the engine will run lean and eat itself in nanoseconds. Fuel pumps are much cheaper than engine rebuilds!
Common wisdom is that these engines don't suffer from oil surge. One school of thought says that a vertical baffle is all that's required. On t'other hand, it should be easier to make a horizontal one for the SuperFIRE. I've experienced fuel surge with a very low, harshly sprung, sticky tyred n/a Cinq which leads me to believe that oil surge may be a possibility in extremis. You'll need to modify the sump for an oil return for the turbo and, preferably, an extra breather, anyway.
Forged pistons, either as a small (4!) batch or as the ones out of a 1.4 turbo (if they'll fit) will sort out compression issues and be much stronger: it's not unheard of for the standard cast ones to suffer from holing or breakeage around the ring lands -- the Mahle cast ones for the 1108 were much better in that respect, but forged ones shouldn't cost a great deal more than the n/a 16v ones from FIAT if you source them from the right place. Technically, they're the best solution. Designed right and you'll have lower compression, squish, bigger ring lands and greater overall toughness: they may even turn out to be lighter.
Design wise, exhaust manifolds for turbos are very, very, different from n/a ones. They need to be much thicker, both for strength and for heat retention, and the 304 stainless commonly used for n/a manis is inadequate.
For the fuel pump, remember that it's not just about pressure but about capacity. You want reserve capacity: if you don't have it, the engine will run lean and eat itself in nanoseconds. Fuel pumps are much cheaper than engine rebuilds!
Common wisdom is that these engines don't suffer from oil surge. One school of thought says that a vertical baffle is all that's required. On t'other hand, it should be easier to make a horizontal one for the SuperFIRE. I've experienced fuel surge with a very low, harshly sprung, sticky tyred n/a Cinq which leads me to believe that oil surge may be a possibility in extremis. You'll need to modify the sump for an oil return for the turbo and, preferably, an extra breather, anyway.
