Need advise on engine swap.

[3RD STRIKE]

I have an 83 supra project car. Its almost ready 4 paint, but i would like to get the engine in first. My problem is that im in limbo on what engine to go with. First of all its going to be a drag car. But i want it to be streetable. I started out thinking about a small block chevy engine because they are easy and cheap to build. But i don,t think it would be practical to drive on the street. And i dont want a 5m in it because there does not seem to be a lot of after market parts for it. And i have an 84 w/5m in it and i am not impressed w/it. So i was wondering about a 7m swap. I know the chevy swap will require lot of fab work. Is the 7 m a direct bolt in? What about the tranny, will need a 7m tranny or will the 5m tranny work? What about drive shaft splines& length? motor mounts? I figure from other posts here that i will need to use a 7m ecu and harness. I have considerd the 7m because it seems to be easier to buy upgrades for.