based on std specs

bore size 90.82 mm

stroke 76.95 mm

and yes its possible to use the pistons you have but imho opinion easier just to buy new for the job as you say youve waited 10yrs do it properly

although i will say is better for n/a if you bore it to +1.0 which if memory working ok gives you a capacity of 2037cc


26 inlet and 25 exhaust for the ports is a good base to work from too