buy a block thats fooked and go from there tbh
gasket set is 300ish to 400, then the bearings are around 300ish, pistons are 500ish, rod bolts and head bolts 250ish machine work about another 250 ish then another 500 for sundrys i guess
thats when it all goes well i guess
usually theres gonna be " ill buy another clutch, then ill buy new cams, then ill rebuild the head then oooo i know ill go and buy qiup ect, then fuel pump then then then then then then then then then
then you sell it 3 month later and buy a newer car with aircon