This is my first SJ i have used discos until now, would the axles make that much different plus how easy / hard is it to change them, plus the wheel hub fitting would this be different ie have to get new wheels and spacers.

Hi this is my set up Engine: Vauxhall 1700cc Diesel non turbo Transmission: Vauxhall Calton 5 Spd Manual Transfer Box: Original SJ410 Axles: SJ410 recently replaced from low mileage SJ My problem is 50mph top speed can anyone suggest a solution, im thinking replacing it to sj413 transfer box would t...