Hi guys, had a good look around the forums (and web fullstop) but cannot find a definite answer. Can anyone tell me in Hedman Headers (https://www.summitracing.com/int/parts/hed-39800/overview/make/land-rover) will go onto my factory pre-facelift 3.9 V8 Discovery 1 (RHD). I will be changing the complete exhaust system so not worried whether it will bolt up to factory exhaust or not, just whether it has the clearances, and what other things I need to purchase to install (heard talk of bolts being too long, needing Coppercoat etc.). If it's too bigger hassle I'll just keep factory manifolds as they have reasonably good flow as they are, more wanting to future proof the exhaust for engine mods down the track when headers will really make a difference. Any help would be great! Cheers guys

Look very similar to janspeed which fit on my rrc. @Mr Noisy has a youtube vid, 3.5 but should be no difference.

Whichever you use, check how the ports match up to the gaskets