with a 318, will these fit on my 72 Duster? I would think so but I figure I'd ask around before buying... Was going to go with headers but don't have the coin for TTI's plus reading the horror stories of beating Hookers and thin leaking Hedman flanges that I don't have the time and wherewithal to deal with right now. Plus I'm not making any "real" power for me to justify the cost right now, i just wanna get rolling.