Mini-14 Availability

I want to buy a Mini-14 Tactical but they seem to be sold out pretty much anywhere. There's only 1 website I'm finding right now that have them for sale and its $1649.00 + tax.

If I bought the stocked version + the stock shown in pictures is it pretty much identical to what I want for $300ish less? Is it easy as 1-2-3 to swap parts?

***UPDATE.

These things are like hens teeth to find, everyday they get more and more scarce I imagine due to the gun bans hitting. I was very fortunate to have found one last night after about 6-7 pages of google searches for $1499.00.

I was going to order the standard plastic stock variant but then I fell asleep when the AT-M stock was available on Ruger's website and it sold out. I also prefer the longer barrel with mid-way sight attachment. I also prefer the cleaner look of the offset sling mount. Can't wait to get it in!