Do I need a new toe alignment after lowered 2.5in?

I got a 1993 mighty max 2wd. I lowered 2.5in front and rear. Front use shorter spring and rear uses blocks. When I turn, especailly at higher speed, I can hear tire squeaking. Feel like I need a new toe alignment. It is normal the toe changes after front end is lowered?

So I guess I have to visit tire shop and pay for wheel alignment?

I had a toe issue with my 93 it wasn't lowered but three tire shops i took it to for the toe gave back the same issue, the inside of both tires were grinding off after a few hundred miles, so i got the alignment specs from a haynes book ? and ended up replacing the tie rod ends then using a tape measure and a string i got it where it is suposed to be. it has been doing just fine for 5+ years, for the last 4 years i have ran a new pair and they are still good. do you know about this method? it is very simple, i am thinking that it dosen't matter if it has been lowered. hope it helps. S