I dont know about the first series, but my second series allows you to slap a V8 in there with the V8 motor mounts, I have a set that I am not using if you want a pic to have an idea what they look like. Also, my Dad said I could always change the gear ratio in the tranny, or rear end so it would rap out at 55 with the V8. Thats all I can help you with, good luck on your project!
- Shane