Bolt on yes, selling no. I do have several 1/2 inch waterjetted aluminum flanges left over that I used to build mine. I started building manifolds for my turbo project too out of them. I'll probably stack a few together to create longer runners. They are gasket matched. I still have a lot of work to do on them. One day I may find the time and motivation to complete them. Tons of room once the original manifold is removed. My original idea was to mount the turbo like eurocharged did but I think the remote mount is a better idea to keep the temps down. I don't want my turbo to spool until 3k anway. The NA really only suffers from a lack of top end power IMO.