6030's all had a P-pump aside from the NA version which had a roosa I believe but there were VERY few of them comparatively speaking (so did the 4840, 4850, 4955, and 4960 for the record). Brad Walk is the guy's name (the collector) and he's in Sigel, IL. The 6030 never came with a 619, no 2wd tractor ever did from deere...ever. The reason we can use a 619 block is b/c they don't make 531's anymore (they're everywhere though so I'm not sure why that's a rule) and they last longer in the pro-stock classes than a 531 b/c of the more HD block. A 619 crank will bolt right in to a 531 block as well so I'd look there to start, and get a bigger p-pump (they were only 11mm or 10mm from the factory) also, get a different charger, the stock one is a huge piece of crap.