Holley and Edelbrocks aftermarket systems are over $2,000! Thats way too much! They are good but I wish I knew of a cheaper system for my upcoming stovebolt. Have to check out the MegaSquirt system. Never heard of that one. I was quoted $2300 for the Edelbrock system at a spped shop near here. They used both but like the Edelbrock a little better. A matter of taste I would think. I am hoping to build a 292 or a 250 with a slightly higher lift over stock. Nothing wild. H.