:?: Does anyone know if exhaust headers are available for a 64 Bonneville w/ 389 4bbl. AT ? If so what sources? Thanks, Frank

Wow...hmm... I'm not sure it'* going to be very easy to find specific headers for that car so you may be reduced to finding headers that fit the engine and adapting the car as necessary. Didn't that year GTO house a 389? In '67 they went to a 400 which on a side note; the heads will bolt to the 389.

I have headers on my 66' they were a piece of cake to put in. they are the old style 3-tube type. i took them off a 64' bonnie. i can send pictures of them if you want! i would imagine the 4-tubes would have issues.. the only problem i had was with the vacuum modulator the old large ones dont fit, but the replacement ones are much smaller and leave plenty of room!

My '72 Grandville has 71-80 firebird headers on it. The right side is a perfect fit. The driver'* side required a 10-minute cut-and-past MIG weld of the shift arm to rotate it 180 degrees and thereafter worked perfectly.

Make sure the trans crossmember has a hump on each side of the trans mount, or you're going to have trouble with the passenger side header. Most do, but some do not.

Lol... nice pic! But please don't post on old threads, rather start a new one and copy the url link if you'd like to refer back to it. Thanks!