Yes unfortunately i do not have the fitting kit.
The bolts that come with the 5/16ths motordyne spacer would fit with my angled spacer, so you could buy new bolts the same size as them. As for a gasket, if you do need one then it could easily be made up from a large piece of card, there's nothing special about it. The only slightly difficult items to get sorted, would be the 6 plastic spacers that fit on the inside of the plenum around the middle bolts!! but again these can be made up with careful measuring, diy style.
I've just measured the actual thickness of this spacer and it is 1/2 inch down to 1/4 inch. The blue spacer i have is not angled and is 3/8ths thick just for your information.
All the bolts you need and the other little bits wouldn't come up to more than 20 quid!! and you could get stainless bolts for that matter.
If i hadn't already bought my original spacer i wouldn't of hesitated fitting one of these to my car.