'75 A model 8.25 worth upgrading or leave as is?

I have an 8.25 with 2.45 gears also. Came out of a 75 dart too. I put it under a 72 duster so i could use BBP wheels. I consider it a temporary rear until i build an 8.75 for it. Investing in a 8.25 is a waste of money, i feel. Actually, a Dana 60 might not be too much more to build. Often times you can find one out of a 3 /4 ton truck pretty cheap and they usually have 3.54 or 4.10 gears. May or may not have limited slip. Minimum to get the truck dana under your car: figure $150 for housing narrowing, $80 for ends, $400 for axles. If it has a good useable limited slip , you may need the proper side gears to mate up with the axles. If the ring and pinion is in good shape and is the ratio you want you can reuse them. I don't know what the prices are for 8.25 parts, maybe a little cheaper, but when you are done you still have a small rearend with c clip retained axles.