Rigth as promised darren i have done a bit of searching and i came up withthis little lot, i now understand the difference between the two caliper types. It is relatively simple to make the adaptor, so i am going to source a set of calipers off a boxter and have a go at putting them to use on my car. BTW these pics are taken off the main site, here, i dont mean to step on anyones toes by using them , but it helps put the point across easier!
I am now gonna try and get some prices for the adaptors, if they prove cheap enough i shall buy them if not i shall fabricate my own. Only problems i can foresee are the front calipers as they already need an adaptor for the 944 mounting, and then it will need another for the boxter caliper, may be able to make an all in one caliper. I will keep you posted, let me know if you find anything.
Adam