On a TLB I suppose there is a fair bit of work, moreso given you alredy have the head off... You need to be able to move the engine away from the transmission about a foot... or at least 6" and lift it out.
It would be a lot easier if the loader and hoe were already off.
No doubt it can be blocked and the subframe removed if necessary but nothing will be easy.
Mabey you want to revaluate wether or not you want to rering it now. I'm just saying realistically... if you're going to get into rings... you probably want to look at the bores and probably sleeve that block if it's suspect, then do the remainder of the bottom end.