i use to own a 1961 starliner 2-door hdtp with the 401 hp 390 in it was the only 390 i've ever owned that ran like there was not tomorrow.there was a lot of chevys still trying to figure out what hit them. and will waste any 390 gt. it was an opt in 1961 and 1962,came with 3x2,cast iron headers,mech.cam.and a hd 3-speed manual trans. no 4-speeds until 1962 its a hard to findengine but you can build one youself just get the factory specs, the 61-63 t-birds also had a 390 with 3x2 but it was a tamer version, it was an m-code t-bird but had auto trans.i quest they had to use up the 3x2 intakes that they made for the 406.