wicked93GS,
The rods are exactly the same (I assume you want to build 1G 6-bolt 4G63 with the "big" rods able to support around 450HP). The only difference between NT and Turbo 4G63 shortblocks is in pistons (7.8:1 1G Turbo, 9:1 1G NT) and oil squirters (NT blocks don't have them, but can be easily installed, although not really necessary). If you're on tight budget, swapping the NT 9:1 pistons for new 7.8:1 factory pistons while punching the block 20 over would be the best option. If you're really cheap
, you could opt to just hone the cylinders (yourself) without actual boring the block as well (if the cylinder walls are in good shape). The only thing you really have to be careful about is the crank (Try to find find a block with a crank in good shape that doesn't need to be turned -which means no scoring or deep scratches on the main and rod journals - and spins freely without excessive end play). You can micropolish the journals yourself and go with Mitsu or Clevitte77 bearings. Carefully inspect the front case/oil pump assembly as well and replace it as needed (expensive, but much cheaper than consequences of oil pump failure a few months down the road...). Replacing all oil seals is a definite must - and the most important thing: Yank the balance shafts out of the block for good - which will greatly improve the reliability of the engine in the future.. Good luck.
