about how much would it cost to swap a 1jz or 7mgte and an r154 5spd trans into a 1991 cressida?

and what work would need to be done? ive never really looked into this swap before but im really interested in it because there is a 1991 cressida for sale locally

could the stock 7mge be turbo'd? or do they have weaker bottom ends than the turbo version?

thanks for any help guys!