7mgte 5speed turbo

Help!!!! I was drifting around in my 87 supra last night and when I had finished it started to lose all power and barely wanted to stay on. we had to tow it home and this morning it started to make a knocking noise in the engine bay and it sounds like something wrong with the cams or pistons...

I have an 87 supra I plan to build this winter im thinking to do an r 154 swap and either rebuild the 7mge block to be a turbo or to buy a 7mgte or a 2jzte I'm open to suggestions and would lile to know where to begin with this