I know i have to get an external balanced flywheel for the big block, will any big block work,402 thru 502. Any one know what service bulletin chevy has on replacement pistons for this beast to eliminate slap at start up.Any one ever build one of these, any suggestions. also this block has water ports into the front of the head, can a regular intake b eused and how would you get around using this inlet ports and just use regular intake neck. Thanks.