Neither is my LBZ, I plan on picking up a core if I go the DIY route. It seems like you are of the same thinking as I am, although I may throw a set of stage 1 heads and a small cam in there too. Ive just totalled up the parts prices from some different motor build quotes and everyone wants to charge anywhere from 3500-5K for machine work and labor NOT including anything else for a longblock assembly. I could pay 5K for the assembly of the motor but I dont think my conscience would let me sleep well at night knowing I paid that much for something I could have done myself. I think having a working motor in your truck and core sitting on a stand that you could be very meticulous with and build as you go is the ticket if you have the skill. Ive searched but I havent found anywhere if people are running larger clearances on their bearings, and ring gaps or staying with the factory specs. I just dont want to miss somthing that is dmax specific as far as the assembly of the motor is concerned. Like on the LS1 motors there is a little plastic dowel that goes in one of the oil galley ways that is flushed out when the block is acid dipped and you have to replace otherwise you will have major oiling issues, Id hate to miss something as simple as that when I assemble my motor. Have you looked into building it yourself or are you going to get someone to build it for you?
As of right now Im too poor to have someone else build it for me haha. I do all my own work and fabrication and would like to do my own motor as well. Althought if I had a bunch of money itd be nice to order a shortblock!! but i dont