I have an SLE 253 and am going to throw in a VS 304 engine with VN T700 box. I know this is nothing new and people will say go LS but that's not what I'm after. The SLE is a one owner original 98000kms car and I intend on keeping it look as original as possible (Apart from the original Simmons FR19s) The 253 will be removed and put on display and the VS block will be converted to carby with VN heads and painted GMH blue with standard GMH air cleaner etc. Now, I'm hoping to achieve 400hp at the fly and although it's achievable with a standard 304 wanted to know what the benefit of a stroker cleared block is, if any? Even if I'm building a 304 engine wouldn't the block still need to be prepared? For a little more money would I be able to use the block for a 355 kit? Thanks for your help.