I've used Geoff @ the Convertor Shop ph07-3390 8824 and had nothing but good stuff to say about him and his product.gregaust said:I always use Geoff Dell at the convertor shop at hemmant or a good friend of mine has great success with ASNU at east brisbane. You will need to list some more details of engine and car to get an estimate of stall speed.If you contact either of these places they will give give you a spec sheet to fill and and make the convertor to suit.