If RIPS is doing the bottom end, let him be your guide. He has the experience and also if anything goes wrong you both start from a known point.
He can make all the lines etc for you if you ask him, and will most likely tap the block for the 12mm head studs before he puts the bottom end together. He will also be able to redrill the correct bell housing holes etc for you. In fact, if he is doing the bottom end I'd get him to provide as much 'plug and play'stuff as you can afford. RIPS can pretty much make anything you need as he has jigs/half cuts etc for a whole bunch of combinations, it's not cheap but his fabrication is A1 and he knows what works. Removes the potential for 'head scratching'.
The oil and water lines don't need redrilling but you'll need to account for the 38mm higher deck. Again, RIPS can make the stuff up and knows what you needed.
I don't work for him and haven't met him but have some stuff he made for me and I'm happy.
Cheers