jerry, got my heat plate installed yesterday. works great, better throttle response, picked up 200 rpms at idle and better off the line at stop lights. mine is manifold heat. i am amazed at the results. ron. btw the test drive didn't go as well the shift linkages came loose and i drove across town in 2nd gear, fun at stop lights. the clutch let me know by the smell it didn't like the situation. at least i wasn't in fishers visiting my son and had to drive back to marion that way. ron