all #1 pistons are the left/front, it all depends on when the dist turns to fire said piston.
the 302 trucks got the goofy intake with the TB either facing forward or the drivers side. Cant remember.
BUT if it is a truck motor, the lower is identical to the holley systemax that you can buy the upper for and mate it to the truck lower.
'04 Roush F150 ( totalled while parked
'89 Gt Hatchback H/C/I, 1.6 rockers, 75mm maf, 24lb, 70mm tb, cai, udp, full exhaust, msd ignition, 373s, Eibach Springs, Lakewood 50/50 rears, Adj Rear Control arms, A/C Delete, Smog Delete, EGR Delete,