Not much.
SHM and cheaper are
never found in the same sentence.
As for the swap ... popular swap for a lot of SOHC guys going to the DOHC.
Good
forum to ask questions or sites
1,
2. But, be prepared for a lot of 'oh, by the way' purchases to make it work. Good point of contact ....
Race Rat
Some swaps are putting the 03/04 long block behind autos. Finding the long block for a reasonable price is the hardest part ... the swap in straightfoward but involved.
Been done, so it's not new territory. Good luck.