Hey fellas im looking to but a h151 gearbox into my 75 series ute instead of a h55 just wondering if someone coukd tell me what that involves modification wise or will it just bolt straight in? Are the 79 series running this gearbox and if so can i just use a h151 from an 80 series and use 79 seires prop shafts to my diffs? Any help would be much apreciated