This answers a question from TAN YJ in the (webber carb problem) forum. I did buy one used from Ebay it was junk, coil was shorted, the pins that hold the springs literaly fell out,the shaft for oil drive was cracked at bottom. I bought someones left over junk, thats ok i didnt ask the right questions. My bad! ! I did finally find one localy for 40$ and used all my parts to build it. If i did it over i would buy one of the ones rebuilt for the 4.2 it will have all new parts. I have done a lot of reasrch on the diffrent supplyers of the dist. and most use rebuilt 30 year old parts. The link in the above message is one that i liked the best . Thats just my opinion. I do have some info on rebulding the gm hei that i could send you if you pm me with address.CHEESE :cool: