Ah thank you, for the link, this gave me some good perspective and i have now taken a part the motor to look at it ( first time in a an engine hoho) and It definitley isnt the orig. d15. it had a gas pump from a carbureted engine and the rings were extremly tight and there wasnt an edge on the top of the piston sleeve. so ive decided to just keep my b1 and maybe do an mpfi swap on her. thanks!