I am looking at an Iron head 4.1 crossflow, this will go into my 63 mercury comet. Currently I have a 200 and c4. I was told the c4 will bolt up as long as I use a drop down cable or make a linkage. I plan on running either Webber’s or a single Holley HP 500cfm 2300, crow cam with full updates, lifters/pushrods/springs/etc. an Aussie speed manifold. This is a non emissions vehicle. Is there any other parts suppliers I should look into?