I don't think thats a aftermarket HP unit like T/A, B&M, Coan ect.. its most likely a stock 340 converter a trans shop spec'ed out from their supplyer with a little more stall built in, i have one just like it and it stalled about 2600rpm behind my warm 360, it worked great and is a fine converter. $50 is a very good price and its a better converter than the cheap MP or b&m ones in Summit ect..