Exhaust recomendations

Well as the project is getting somewhere, at last, I'll be needing an exhaust soon

The engine is a 1400cc 16v Twin Cam on bike carbs with a stainless 4 into 1 manifold.

Any suggestions on exhaust brands, sizes and costs? I can have one made for around the £700 mark but I'd rather not go down that route a while till I've saved up following the build.

suggestions and pixies of tailpipe welcomed

Ian