Questions from a newbie...

I agree about the small block. There is a shop here in TX that does 360 stroked to 408 builds, so I'm going with that route. In all honesty, I'd be over the moon ecstatic if I could get all of the conversion parts for $1500. I'm guessing that doesn't include the trans itself? I'm also considering just doing a 727 swap and keeping it A/T. Can I use my /6 k frame? I was thinking it would need to be upgraded to handle the V8. Disk brakes are on the list, for sure.

This was answered in posts 10, 17,18,21
While you can use your/6K with the Schumacher brackets; I just want to re-iterate that some members have had trouble fitting over-the-steering headers with those.And you most definitely will want that type of header. Barbee has already mentioned that he has a spare factory K to sell. If you are looking to save money, the factory K is sufficient for your application. If your bank account is fat, then yes,there are other options.
In any case,If you use a 68 to 72 K any K, then you will need to strap that 408 down.You can use the Schumacher anchor, get some solid mounts(or at least the driver's side), or make your own. The 73 and later K is a spool mount and will also fit in there. You can buy some safety mounts to fit that combo, negating the strap. I highly recommend the 73ups.

>You might consider buying a 73 up V8 donor car.
It will get you almost everything you need; as to the K, the suspension,and steering, and the disc-brake system.
If it comes with an 8.25 rear end, and you promise not to put slicks on your car, the 8.25 will be fine on the street. They often come with 3.21s, but rarely with an LSD.
If it is an A/C car, additionally you will get you a bigger rad,the pulleys, and the bigger T-bars.(.892s IIRC)
If it has a hitch on it, it may have upgraded rear springs.
If it's a SBM DartSport stick A/C car, you may get lucky and have everything you need for a full conversion. This is the one I would try to find.Don't be sad if the tranny is gone, they are available separately.