I have a deluxe Ridemaster 8 inch narrowed beam for sale for $300.
It is fully tig welded by Detroit Johnny. It is my display beam so it's definetly show quality. I can order leaf springs and tie rods custom made for this beam. Ridemaster does not use stock cut downs they make it all from scratch.

leafs and ties from Ridemaster are around $150 depending on fabrication cost at the time of order.

If you want to tuck some big rims or run disk brakes or even both this is your beam.