hi, i have a chance to pick up a 4200 engine 05 with 75k mi.. it has low compression in 2 cyl. 70 and 90. i can get this from where i work probibly for free. i have a good running blown 270 gmc in my 53 2dr but i have been following the talk about these 4200s. what would you all think about my blower on the 4200? the gmc realy gets it on! would the 4200 be that much better. thanks
