#1
Hey I have an Ibanez RG4EXQM1 (http://www.guitarcenter.com/Ibanez-RG4EXQM1-Quilted-Maple-Top-Electric-Guitar-103662763-i1168534.gc)

And I want to change my bridge pickup and I play pop-punk and punk rock on this guitar.

I use a Line 6 Spider III 15 15W 1x8 Guitar Combo Amp (http://www.guitarcenter.com/Line-6-Spider-III-15-15W-1x8-Guitar-Combo-Amp-103944831-i1168996.gc)

I was looking around and saw the invader pickup, and saw it in the Tom Delonge strat, and I think it sounds pretty cool.

How big of an improvement would it be to upgrade my Ibanez INF4 Pickup to the Seymour Duncan SH-8 Invader Pickup?
#4
pickups wont make a big difference through your amp. save up for a new amp.
Ibanez RG321MH (Air Classic/Tone Zone)
Fernandes Telecaster (Twang King/stock bridge pickup)
Blackstar HT-20 (Scumback 55 speaker/ Tung Sol tubes)
TC Electronic Nova Repeater
Lava Cables Clear Connect, Soar and Mini ELC