looked at cliffords dual 38/38 last year and cheaped out at last minute. already had the intake and weber/carter 32/32's so just bought true weber 32/36's. mostly for lack of available jets and linkage issues(long story). 'some' improvement on power/performance and fixed all my other issues. was concerned 38's would be too much, they are syncronise and 32/36 are progressive. I can upgrade down the road as I believe the adapters and the intake itself are less than desirable for performance. could use a little more gear. have a 12 bolt posi with 410's but was too low. 3.55's would be ideal but that requires a different carrier so likely end up with 3.73's. I am sure I can handle the lumps but would rather have a pro go threw them, porting, cc and mill and verify all else is good.