This thread reminded me I have an extension for the
B7500 I sold last year. It won't fit my current FEL. I had our sheet metal guy at work bend 10g(?) galvanized into a sharp-cornerd U that fit just inside the bucket and attached with bolts. I think it adds about 18". It was for a big mulching project and worked well. With a full bucket of wet mulch it required hanging the RFM for balance. It was strong enough to lift the front wheels off the ground.
If anyone near Harrisburg/York/Lancaster PA with an LA302 FEL is interested they can have it. Shipping wouldn't be worth it because of the size and weight. I can post pic if wanted.