Mine's a cossy but an engine is an engine , I hate to do this but you need a tunner/mapper to advise you.
1/ what are these engines capable of (with all nes to run this figure)
2/How reliable it would be at this stage.
Along with the depth of your pockets.
I have been round the houses with mine and all said and done a drivable reliable car Makes me smile.
My Best.
Tim.