[ QUOTE ]
Gm had 3 suppliers for antennas in 69 2 of those companies had the groove at the top of the mast and 1 company I think it was autronics DID NOT have the groove at the top of the mast, believe me I have done some research on this, so it is acceptable to have either with or without groove at the top of the mast in my opinion. and yes you are correct Dru.
[/ QUOTE ]...YES FOLKS !!!!! he HAS that much free time !!!!!