so my dad found a complete engine 3800 NA t 50k o the clock vin k obvouisly came out of a 2003 grand prix gt. THE ONLY DIFFERNCE BETWEEN MY l67 and THE VIN K block my dad found is compression ratio correct???!!!??? ive been trying to explain it but it doesnt seem to be working to well...... he thinks we can get the block tear it down to the short block we need use my old parts from my l67 and everything is all peachy... i told him in order for it to be safe you need better flow mods correct? such as headers/3inch downpipe, colder t stat, and a intake. after these mods it should be safe to run my blower and lim and heads from my l67 correct. the reason for needing more FLOW mods is because of the high compression ratio from the vin k block correct guys! if im missing out anything please let me know my dad doesnt think ive done my research... so everyone please chime in and agree or disagree and why please thank you.