The Bulldog loader was made for LCI in Wills Point, Tx and they have gone under. Don't think those loaders or parts are available anymore. A gentleman on another forum was looking for a cylinder for his and I started researching and that is my conclusion. His cylinder end came loose some way and mush roomed the end. He has the same 285 loader I have. I have done extensive on line research trying to match these cylinders and not with much luck. I ended up calling VN Tractor in Dallas and talking with Rodney. He stated they had cylinders for their VN loaders (I think same as Vtek) He told me he would check sizes on their cylinders and get back. I emailed him a specs drawing on the cylinder but have pretty much determined he is not going to get back with me. I know all this don't help in the search for vtek specs but thought you might find it interesting.