Hi Pete, On the car I have found a good complete stainless steel exhaust system with centre silencer also in ss, the system is in a very good condition so I want to use this wonderful exhaust on my car, but due to this reason it is difficult to understand where this system came from , I have found from photos on the web some similar exhausts from sj and others supplier but I not shure who is the original supplier and manifacturer , so it is a risk to buy something that can't fit with this system, probably I need to make this pipe here in a workshop ,so after to build it, I'm interested tu ear some opinions from who have tried the car with and without the centre silencer, and what are the differences in performance/sound , now the engine of my car is total rebuilt, with new also balanced crankcase, special pistons and a lot of upgrades (but still 2 litres) now it's soooooo smooth and clean...without rattle, ritmical noises and so need a bit more voice from exhaust...