stock comp. 318, which purple shaft is best?

im gonna go up there and have my deal worked out first. im not sure what kind of intake manifold it is, but if its a cast iron one, im gonna tell him ill give him like $60 (on the top side, i wont start there) and if he wants to get all bitchy, ill tell him, its a fscking cast iron manifold, it doesnt matter if its the only one you have, its not worth THAT much. if i dont get it becuase he likes to be a greedy *****, then ill just stay after him for a while (as im saving money for a NEW one), if i still dont get it, oh well. i can get a new one.

would an orange box (@ 6000rpm rev limiter) be a good addition to my car? i was going to get one and a new distributor later on, and try to get me a HI 6... whats the best ignition setup for me if i cant spend TOO much money?

thanks, jeff