I had some mid length headers made by Accufab for my 460 but it fits horribly. I had to completely shave down my SFI bellhousing and beat the crap out of the header collector and Im not too happy. When I spoke to the salesman he said it would fit with my manual setup, but its not even close. Im sure it clears the body, but horrible clearance when it comes to the bellhousing. I know its not the tranny's problem because it doesnt even clear the starter hump in the bellhousing which is exactly where it is suppose to be regardless of auto or manual, factory or aftermarket bellhousing.