The flange is for welding to cars with a hardpipe. For the coupe, you would need a
Universal fitting that attaches to the SSQV and plugs into the same place you would put the standard unit to. Because this universal adaptor is 34mm, you will also need a silicone reducing hose that takes it from 34mm to 25mm (If i recall correctly?)
If you want to make the SSQV a recirculating device, then another
adaptor is needed! These come in 2 different sizes. 19mm and 29mm. I got the 19mm one..and yet another reducing connection (in this case, expanding it from 19mm to 25mm) has to be made up for it to link to the coupe's existing pipes.
All in all, it works out to be quite an expensive system!