The main question is what are u using for a radiator and fan blade diameter???
The factory used the same shroud in '68-'69 for all V8's (318, 340, 383, 440) with and without A/C. The factory part # is 2785614. Someone reproduced them years ago, but from what i've heard they weren't very good, flimsy.
If you wanted to go with the factory radiator for '68 u would pay big bucks for one. The part # ends in 033. Glen Ray's reproduced them at one time but no longer have any. For '69 the # is 2949065
