I have done 2 conversions using the T-5 in my 34 coupe and '33 roadster, both with flatheads. In both cases I bought new Ford T-5s for around the $1300.00 range and put s10 tail housings on them. The problem with the s-10 T5 is ratios and the fact that Tremco has improved on these trans from what they were. In the coupe, I modified the stock stamped bellhousing to accept the Ford T5 bolt pattern and had the input shaft shortened (precision ground) to the right length. In the roadster I was fortunate to find the MCF adapter plate. I use 4.11 rear end gears which give me ideal gear ratios (1800 rpm @ 60 mph).. This is a great setup..