I just checked the YT store in the left column, they have all you'd need, and for some odd reason, about half the price of a gas engine kit! -5 bills? But you got to know the diameter of the crankshaft before you order the kit, can't guess at bearings.
Now, you must know SOMEONE who works on engines, gearhead kids, muscle car neighbor, does not need to be a massey engine guy at all. This is so easy to someone who does modern cars- or any cars at all. Tell them you do this job sitting on a box, not crawling on the floor. Yes, read and re-read the manual, check out you tubes on the subject, and let you friends go thru the book before they start helping. You will be fine.. lot of work, lots of things you will finally see that will need cleaning, paint, rpair, but no better time to tackle it.
BTW, check the archives on this page for pics and ideas too,