sir jee did they push the engine more towards the firewall after what i c in the second last pic ? It needs to be pushed back
Has the denter made arrangements for the gear lever position ? U need to push it more towards the fire wall , the untouch firewall may not be of use if you lack control , its a very big setup so u better place it NOT TOO high or NOT TOO LOW or u'll end up scraping ur transmission all the way down the road
Usually foundation is set after the engine is hanged once in the bay to check clearance of oil sump and the mating with the rear end
Its a long chasis so make sure u make good use of it by pushing it a bit more towards the wall by either hammering it to make a cavity or cutting it and finishing it before finally dropping the engine, the more its near ur legs the better driving experience it will have
P.S are u using the stock master cylinder ? (last pic)