I would say heritage panels are better than steelcraft. Just fitted a pair of Herald doorskins and not a bad fit to be fair. They were the standard ones paddocks, Rimmers etc are selling.
Front floorpans, the chances of finding genuine nos ones is very unlikely, there tends to be two type available at moments, the ones with the flat edge where the gearbox tunnel fit and the ones without. I would go for the first type, more expensive but better.
If you are buying within next couple of weeks, Rimmers have a sale on at moment. Which makes them very competitive on price, if after that look elsewhere as most expensive