Whoa there Paul

Unfortunately the Q is not quite the same for a few reasons so he does not have all the parts you spoke of.
1. He does not have a flywheel that will match the paragon his takes power from what you would call the front of the engine from a damper hub that bolts to a damper drive plate that mounts to the crankshaft.
2. He does not have a bell housing to bolt to a std 350 engine again his power comes from the "front" of the motor. his "bell housing" is actually a timing chain cover that the paragon bolts to.
but my take on the entire thing is he can use a std block there is no difference between the Q block and a std block the differences are elsewhere. So if he has good intake along with a good cam, crank etc he can do that. My other idea would be a short block 350 or whatever turned into a Q or find a bell housing from a std Chris motor and use that either an F or G series motor would work for a bell housing even in your picture the paragon goes to a damper hub which he would also need but I think thats about all he could reuse carb etc.. to get it running again. unfortunately the distributor wont work in a std series motor. The Q has a shorter shaft.
Lets take a look at firing order
Q LH rot 1-8-7-2-4-3-6-5 ok now lets translate that into a std block
8-1-2-7-5-6-3-4 ok now go one step further std firing order RH rot
1-2-7-5-6-3-4-8 hmmmmm are they really that different???? nope!
A left hand Q is spinning the same way as a RH std motor just turned around but looking at either end of the motor its turning the same direction we can go even further

Q RH rot 1-5-6-3-4-2-7-8 ok LH std block translation
8-4-3-6-5-7-2-1 ok next step LH std block firing order
8-4-3-6-5-7-2-1 same order again just shifted so you motor heads got all this

theres a test tomorrow be there early!!