Sod the coupe lol, a 5cyl in and uno engine bay, just got 2.0 fiat twin cam from Fiat Corma without balance shaft. You will have to PM Dunc to find out where he got his mounts made but it will destroy all. Toyota lump will be **** compared to a true fire breathing Fiat twin cam
Lancia Delta's use them as standard (they have the balancer shaft though, which means it is difficult to get clearence when fitting, again ask Dunc.) and they are quick as hell, also twin cam's with the right turbo are crazy fast, like 300bhp up fast, but you have to tune it properly and not just bolt stuff on, use high octane fuel and turn the boost up, you'll kill the engine.
You have a very clean looking uno there, and it's 5 door so an even better chance to pull the finger out and make a monster sleeper
Good luck to you what ever option you choose, and please tell me you are going to upgrade everything else before the power unit? i.e. brakes, suspension, roll bar, if going crazy powerful then roll cage at the minimum.
Dan
