Paul Walker tribute, brother Cody Walker vs. pop star Justin Bieber: Twitter fans debate 'best' 'Fast and Furious 7' replacement following actor's tragic car crash death [POLL]

Following Paul Walker's tragic death on November 30th, Universal indefinitely shut-down the production of "Fast and Furious 7." But several fans believe that filming should go on to honor the beloved actor's memory and legacy. Rumors suggest that Walker's younger brother Cody has potential to take-over Brian O'Conner's remaining scenes, while a mock "Fast and Furious 7" movie trailer featuring pop singer Justin Bieber recently went viral on the web. Read more on all of that here:

Paul Walker 'replacements' brother Cody and Justin Bieber do not respond to 'FF7' rumors, popular 'Fast and Furious' car up for sale after actor's death

Paul Walker fans rant about Justin Bieber 'Fast and Furious 7' rumors on Twitter: 'Believe' crooner to 'replace' Brian O'Conner? [VIDEO]

Paul Walker's brother Cody to replace 'Fast and Furious 7' star? Twitter fans' mixed reactions to actor's younger 'lookalike'

Paul Walker 'replacement' Justin Bieber? Fans NOT amused with viral rumor after tragic death, epic tweets rock Twitter, what do you think? [POLL]

Here's what some Twitter fans are saying about both "replacement" rumors:

@macymariem: "I pray to God Cody Walker finishes Fast and Furious 7 in his brother's memory! Just one last one for Paul."

@gracelit211: "If Justin Bieber replaces Paul Walker in the Fast and Furious movies I would probably kill someone."

@BadWilf: "Cody Walker has been approached to step in for his brother and finish Fast and Furious 7. It could actually work."

@mnmtwinz: "Justin Bieber to replace Paul Walker in Fast and Furious 7? That sounds like a sick joke. C'mon, internet... #NoJustinForFF7."

@CezGonzalez: "Paul Walker's bro to fill in Fast 7 scenes. Should be a good tribute."

@AntoineTheOne: "Justin Bieber says he wants to take Paul Walker's place in Fast and Furious... i dare you, Hollywood producers... i f*cking dare you..."

@afiqazmeer: "So Paul Walker's brother will be in Fast and Furious 7. But it still will never be the same without him :/."

@Jake_M24_hibbs: "Justin Bieber to replace paul walker in fast and furious 7, oh dear!"

@Livball15: "Paul Walkers brother Cody is supposedly going to fill in and help finish Fast and Furious 7! That is the just AMAZING!!"

The overall sentiment is pretty obvious and mutual. What do Mstars fans think?

Again, these rumors are all just hearsay - NOTHING has been confirmed yet. Neither Cody or Bieber has expressed interested in taking on the role. Family, friends, co-stars, fans, and producers still need time to grieve the loss of Paul Walker.

RIP, Paul Walker.