1) There are a bajillion different mounts out there - I would try to find one that uses slotted holes instead of the round holes so you have the ability to slide the engine forward or back a bit.
I've heard a lot of good things about these ATS mounts, but I've never used them (they are NOT slotted!!):
http://store.nexternal.com/shared/St...ID=&GalleryID=
They let you use the factory BBC mounts...BUT - BUT - BUT...when GM designed the GenIII platform, they pushed the mounting of the engine 4" forward from the stock location a GenII or GenI SBC would sit, so ... you need to take this into consideration. Bolting something into "Factory position" could actually put the engine almost four inches in a different place
(I hope this was straightforward enough an answer
)
2) I've seen it covered in a thousand magazines, and there are a dozen threads about it.
Basically, you'll need to bolt up the intake and carb and get a spark control box. Cost on the control box is a bit spendy for my blood, but it significantly increases ease of install.
This is the box you can use:
http://www.msdignition.com/ignition_33_6010.htm
$330 at that store (I DO NOT ENDORSE THAT STORE, SHOP AT YOUR OWN RISK).
There are other controllers out there.
Personally, if you want to do this easily, I think ...I'd get some adapter plates, bolt up the engine, the bolt the tranny to it (using whatever adapters/adaptation required), then move your crossmember and make a new driveshaft. Seriously - think about that - New driveshaft is what, $200, tops? Very easy to measure...
The reason I say this is because your concern seems to be engine mount, but mounts are harder to fab than a new driveshaft.
If I've learned one thing during my swap it is -
When at a crossroads, Identify the easiest part to replace and replace it
Good luck, and please create a build thread and take lots of pictures when you do the swap! We all are really interested and want to help!