I don't know about Delaughter ,but I am pretty sure that SLP had one. I have had to put sleeves in some SR V's when I was in the Machine shop and LA Sleeve had 2 sleeves ,one was a normal size sleeve and the other was a lot bigger. I don't know why you needed a sleeve that large other then putting a big bore back to standard. The SRV cylinder is large enough to take a bore that big without sleeves so it shouldn't be any problem to make one,other then getting pistons. All I know is that the single carb isn't big enough for 535cc let alone 650. It would with out a doubt need twin carbs and pipes..