ok first question is about speakers: does anyone know what size of speakers go in the dash on a 1984 toyota pickup searched on here and didnt find anything.

second question is about intake tube: is replacing the stock plastic intake tube with a metal one made from exhaust tube better for the truck or not

thank you in advance for any advice

 

1. not sure
2. "better for the truck" is a relative and subjective term. What do mean by "better"? Please elaborate so we can help you better.

 

will it allow better air flow since stock tube is not smooth on the inside and help keep the air cooler

 

for the 2nd question well yes it smoother, but performance would be negligible, just make sure the piping is clean.

 

the speakers in the dash are 4 inch