Hans, I use a draw through on my turbo AMC 258. It is easier to set up as you do not have to seal the carb, use non-collapseable floats and boost referenced fuel pres regulator. I did break pistons 4 times with my first set-up. Detonation will break the ring lands on stock AMC pistons right now. You must avoid it at all cost. I am now using a full dish 232 piston in my 258 with the piston .90 down in the bore. No detonation yet but I drive the car pretty easy. I retired from racing and have the engine in a 27T street rod. Good luck on your project. Mike
