I have a few sets of the GMC intermediate lifters we made for either the stock or an aftermarket 12 port head. These were originally designed by Kay Sissel and Mike Kirby and is a must if you are running monster lift cams $300 per set. If you want them DLC coated you can send them in with ours and pay what we pay (though its not cheap, but better than standard pricing). I also have a new spare set of Fontana roller lifters for a GMC with the tie bar $700. Tony
The intermediate style is on the left and the Fontana lifter on the right and they will be very similar to these.
