You already got a yes to that question
So YES, get it
Reason 1) your oldie might just make it but that's not good enough for a performance vehicale, should be able to do what you want with ease which the Tomei/Nismo will
Reason 2) The oldie might be nearly dead, Get a tune, all good then 2 weeks later, lean out and bang!
The Tomie and Nismo should be the exact same part nunmbers from whatI've heard and the Tomei is prolly $50 cheaper so just go for that.....
But of course, the choice is yours
Oh, and in case you're going to ask.....You will NOT need an aftermarket Fuel Pressure Regulater..Period