Arron: I went to their website and looked around then I called them. I had them send me an adjustable ball by ball pushrod and I followed their instructions on how to measure the length I needed. I measured 4 intake and 4 exhaust and logged the data. Then I called my rep and ordered what I needed. There are many threads about this conversion. Search the small block forum and you will be enlightened. I think adj pushrod, locking adjusters and custom pushrods good for 500#'s open pressure all in I was about $350.00 or something. I was advised to do it earlier in my build but as usual I have to pay tuition and learn the hard way.