Just the feedback I was looking for. So I what about a T-72? Would that be (by your experience) too big? I do not know the limitations of volumetric efficiency of theese engines. I'm thinking with the port design the airflow #s, it would not lend itself to supporting any mass ammount of air/fuel. The custom manifolds would essentially be free because I can get all of my materials and consumables for free and it's just my time which I can't really find anything better to do with. I am an ASE master tech and L1 advanced engine performance specialist and make damn near six figures working on everything from Geo s to Benz s and repair turbo cars all the time, but can't engineer a single turbo setup on a carbureted 250 by myself. Kinda ironic ain't it.