There should be fair amount of info. Original transmission will mount so if you do that, the mounts are the same. The front engine (right side) mount keep the 20v, it should bolt up. If you're trying to fit the 6 spd then I can't help you with that. Oh, look for bellhousing that has the starter hump on intake side. If you keep original 20v header, original starter doesn't fit on exhaust side. You can use supercharged MR2 starter for intake side. I recall getting creative with some of the water pump lines. I think original throttle cable works fine, just get a little creative with the brackets. I took original 4AGE clips that hold the cable housing above the block and bolted them to the 20v head in approximately the same locations.
Hoses, with original OEM location radiator, I got some hoses from Napa and trimmed them, fit almost perfect. Check my post for the part #:
http://www.studionewmedia.com/blog/index.php/2016/06/20/hosed-and-belted/Since that post, I have replaced the crank pulley with 16v so I could use full width belts. The 20v pulley doesn't line up, so you either want to run all 16v accessories and pulleys, or all 20v. For the actual part #'s, you'll need to experiement. My setup is OEM 16v p/s pump, OEM idler for non-a/c. Water pump is OEM 16v and alternator, but the alternator mounting is not quite OEM so OEM spec belt length is probably wrong.
I can't help you with heater hoses, I'm not running heater.
For fuel hose I ended up using Russell kit for Honda with the 90degree bend but a longer hose section. Trimmed down one of the intake manifold studs for more clearance.
The wiring is the big deal. You need to merge the 20v wiring with your 16v. And the 20v wiring is designed to go through firewall on left side, so when you route it on the right for US, you need to lengthen wires.