First let me say hello to everyone here. So far just reading the posts have been very helpful. Although, now I think I am stumped and need some help... I really messed up (was in a hurry), and took out my existing distributor without marking anything first. The motor has been rotated since doing this from taking the flexplate off. My question is, I plan on buying a Pertronix Flame Thrower HEI distributor but am afraid that it may be a bear to install now that nothing is marked and the engine is not tdc. What is the best way to go about installing this? Also, do I need to purchase something different for a rolling cam? How do I even tell if I have a rolling cam? Sorry for all of the questions... Thanks in advance.