LS Stroker Oil Pan KitNew, Mast Stroker Oil Pan Kit! Cast AND Machined in the USA, includes our stroker windage tray that clears massive 4. 250" stroke cranks! The Mast LS Stroker oil pan will greatly simplify the installation of a big inch LS engine into your car or truck. Don't cut corners on the most important part of your engine, LS Swap with Mast! Sand cast aluminum ls oil pan no leaking from fabricated welded seams THE most universally designed LS engine swap