I've owned quite a few rifles (91/30) and carbines (m38,m44,m91/59) over the years. Sold them all off except one 91/30, a really nice 1921 hex receiver, just to have.
they are pretty fun to shoot and relatively inexpensive to shoot. For the most part, accuracy is not bad. For the price, they're nice to gather a few....just cuz.
I wouldn't try to convert it to a sporter or anything, it's just not worth it in my opinion. Just shoot them as is and have fun. You can always sell again down the road or just tuck in the back of the safe, either way, you're never really out much $$