hi all im wanting to build a good fast engine PREFERABLY 90 = 94 models i was hopeing someone could tell me the codes on the crankcases example (3bn03 y-1) which one of these is the best to use also i would like to no which head and barrels to use ad also stator plates cdi's ive got loads of dtr spares only problem is identifying which ones are the non restricted parts and which are modern ****e any advice would be welcome thanks alot