i'm putting together a lt1 i bought off a friend and was wondering if i should use the old optispark that came with it? Priced out new ones and Holy ****!!! Any way to test these things to see if there good? Maybe i'll just throw it on and cross my fingers. Any thoughts?

 

Yes, go to the coil packs. There is a separate thread on the subject. I have never read of a good solution to the Opti itself. The coil packs looks like a good solution though.