Irun a 4.5 ft on 26 hp mahindra no problem running. Have to slow for tall or thick grass.
Weight wise if I'm going uphill and lift mower front tires get really light [emoji44]so be careful
Just go to mahindra com and go to parts catalog. Search by model number ie 5145. Then look under accessories you will find second remote kit. That will show you where you will have to hook into.
Thecalve they sent is basic hydraulic valves just have to have supply and return.
Here some pictures finally.
Dual remotes on back
Dual spools side by side
Red and black (supply and return hoses[emoji2369]) from block below loader connections to remote spool
Not sure of exactly how flow is