CPPA headers

the old cppa headers are not the same as the ttis. they took the design and tried to improve them a little. on my cars i have 1 3/4" ttis on a 400 with power steering and a set of 2" on a 431 with stealth heads and manual steering. ps wouldnt work on those. they were made for the rb block only and i had to move 2 tubes to clear the starter and the steering column outer jacket for the coulumn shift. i bought them from a guy and to me, they look a little different than the ttis currently sold and the old cppa. i think they must have been an early set of tti.