Out with the 4-speed

I got the scamp done and drove it 320 miles to somerset ky. and back. And would like to do a 5-speed I called a few vender that had 5-speed kits and could not decide witch one to go with.One vender was Keisler they priced me one for $3700.00 and would need my bellhousing to machine.I told the salesman that was fine and I would come get it since there only hour and half from me .Then he told me it would be $350.00 more if I did that So then I called Classic Motorsports Group they priced me a tremec 600 for $3400.00 with a new bellhousing and free shipping so has anyone used this kit.