Hi thanks for the feedback. And good to hear it looks safe.
I know 5 inches is not much, but I had two wheels up on the kerb which is 4.5 and I was able to get under. I'm very slim
I can have the option of putting another layer on .
I'll be changing the engine oil, filter is underneath, and the gearbox and diff oil. And other stuff as it comes up.
Kadman, thanks for the links. I know this sounds silly, but those ramps (not just the ones you linked, any I mean) always look unstable to me. I do have axel stands like the ones you linked (ratchet ones) but again I think I'd me more comfortable with the blocks.
If I need to remove wheels I'l use the stands and put the blocks under the sill as a fail safe.