Well guys will give this a retry TT07 davis head. engine looks good well made but poor on performance , results not good Davis took the head out of pr0duction
found one in flea bay and this is the newer version of the 07. Davis thinks the engine has some serious timing or port issues strange for thunder tiger they usually get it right on glow poor on the writeups , if time permits will give it a shot this weekend need a engine for the coyote electric glider conversion , gut feeling will get the Cox 049 Davis head