go with the hebo manston replica, i had one on a Jog once with the Gianelli Shot and it is a soldier of a block trust me from experience, the power out put from this block is highly impressive and quite frankly unbelievable. we ran the block as if it was a full race block. also the block has seized twice and still runs with no problem. A soldier of a kit. I am still debating on my next motor. if Stage6 had not developing such a promising overal package i would spend the money on more Hebo parts and build a complete Hebo motor