Vickytulla ko JOSH aaya bhai 
FINALLY. Someone who knows.
Yes i was trying to remember but Deluxe's pistons were coming into my mind again and again. Btw, the braking force of both bikes feel nearly equal, but that maybe because of "hydraulic" lever system (instead of a wired one). But Ravi's weight is more than that of Deluxe, which is why on high speeds, it may not feel "as agile" as Deluxe's brake. Add the fact that "rider position" (of older models atleast) really don't make you (the rider) feel the G-Force being applied to the front wheel, under emergency braking conditions.
Never relied on front brakes? You can't be serious. On a CG125 atleast, 90% braking force comes from the front brake. And personally, i almost always put 90% pressure on the front and just a notch on the rear. That combined with the engine braking (which i a lot in this OHV engine) ... is the only thing which makes this bike stop.
Not 90 bro. 60. 90 pe to waisay he iss ki brakes nahi lagti. Been there, done that. Trust me, sirf ALLAH he bachata hay. So many times i have escaped near death situations and bike stopped ... like, someone got a hold of the bike and it stopped. Maybe thats the barkat of "Ayat-al-Kursi"+"Dua-e-Safar".
Like a disc? NAH Don't forget its still a "Drum" brake. It can NEVER match the response time of a disc.
I do admit that its braking force is much higher (than our local drum bikes) because:
1. Its big *** front drum
2. Its wider front tyre
3. Bike's own weight is significant
4. Its road grip is excellent
ALLAH ka suhar karo bhai. What exactly happened btw?
GS500 has a HUGE disc upfront though, hence there is some "serious" braking force.
haha. I see what you did there
Thanks for acknowledging the fact that disc brake on these local bikes actually do work, and have added benefits than a drum brake (ofcourse risk is always there, but its upto "the rider" to control that braking power under his hand. Like they say, a car is as good as the person driving it).
HAHA. Don't tell me. I hate GS150's drum brakes for that very reason. GS150 is the kind of bike which needs more wider tyres, and a dis brake upfront. Its a "big" bike.
Do you know i never ask someone for his GS150's keys to take a test ride, for exactly that reason. Its drum brakes make me afraid. They NEVER work when you are above 60 
(worse than a CG125 ... BELIEVE ME)
You must be out of your mind to think about putting another "DRUM" brake on your bike. Why bother when you can do this to your bike?
The last picture is of "Dr Omar's GS150" i think. It has a thread in this section too. You should consider spending 10-12k and get this upgrade. You won't regret it. Its a MUCH NEEDED upgrade for a GS150.
