I need a new alternator, would it be smart to get one off of ebay if i find a brand new one. Also, whats the stock model for a 4.0 SOHC alternator? And i'm guessing i could probably put bigger better ones in then the stock one right?

*UPDATE*

And while I'm at it, what are some good spark plugs and brake pads/rotars.

 

Ive got a 130amp out out of an expo and it works fine.

 

Motor City Reman - High Performance Starters and High Amp/High Output Alternators

 

Here are some that I found

Bosch
130 Amp (optional 130 Amp Charging system?)
Auto Parts & Auto Accessories - Over 6 Million Auto Parts, Aftermarket Parts, Truck Accessories & Car Accessories
SKU (part #) 4492679

$179.95

HD Maxx
130 Amp
Motor City Reman - High Performance Starters and High Amp/High Output Alternators
$135.99

(info)
*92-05 Ranger 2.3/2.5/3.0/4.0L

Alternator - Ford 3G Series IR/IF
Used On:
(1993-92) Ford Aerostar 4.0L
(1996-93) Ford Bronco 5.0L, 5.8L
(1996-93) Ford E Series Van 5.0L, 5.8L
(1994-91) Ford Explorer 4.0L
(1997-93) Ford F Series Pickup 5.0L, 5.8L
(1992-05) Ford Ranger 2.3L, 2.5L, 3.0L, 4.0L
(1994-91) Mazda Navajo 4.0L
(1999-94) Mazda Pickup 2.3L, 2.5L, 3.0L, 4.0L

Replaces:
Ford F07F-10300-AA F07U-10300-AA, -AB, -AC F17U-10300-AA, F67U-10300-AA

*So this is basically an universal piece I guess?

Remy
130 Amp
Advance Auto Parts
Part # 92306

$174.99


Any suggestions?