Beaware of bugstuff engines the owner has decades and decades of part sales and is a very reliable for parts but the engines built there are poorly assembled and a professional engine builder does not assemble a engine unless all parts rod,pistons,cyclinders are checked for length,weight,oversize or balancing the cylinders,combustion chambers,crankshaft.The cylinder heads are checked for proper seating and proper torqueing all this adds up to durability,performance which is bypassed at bugstuff and are assembled as fast as possible with many hands involved.