There are a few companies that make two into ones for A10's but fitment is always a problem. It seems that you can buy two identical systems from the same manufacturer and one will fit and the other wont.
I have bought all my exhausts from Armours for many years and they have always fitted well, maybe the occasional tweak to a bracket but usually bolt straight on. However I recently bought a two into one for a plunger A10 and it wasnt even close, took me a lot of work to fit it.
If I bought another one I would buy it unplated, fit it and then get it chromed.